ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 18 R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified /
R50-R69 General symptoms and signs /
R50 Fever of other and unknown origin
Billable ICD-10-CM Code R50.9
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R50.9
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Fever, unspecified
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| Fever NOS | |||
| Fever of unknown origin [FUO] | |||
| Fever with chills | |||
| Fever with rigors | |||
| Hyperpyrexia NOS | |||
| Persistent fever | |||
| Pyrexia NOS |